1. Material flows;Amann,2000
2. Accounting for Resources. 1. Economy-wide Applications of Mass-Balance Principles to Materials and Waste;Ayres,1998
3. Industrial Metabolism, Restructuring for Sustainable Development;Ayres,1994
4. Naturvorratsrechnung Boden;Bittermann;Statistische Nachrichten,1990
5. Is agriculture using more and more energy?;Bonny;A French Case Study. Agricultural Systems,1993